hiya,
do a few Google / search's etc, its called a 2-Trac, runs a fluid drive front hub, not always being powered only when required, sort of on-demand thing..
250 built by Yamaha, in Aus there not road legal, and cost $25,000 ($10,000) worth of suspension in the system, good reports from the write ups although due to lack of being on road unaware of high KM's trip reports etc..
cheers al
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